Installation and fixture selection of CNC parts
naky
www.diecastingpartsupplier.com
2015-08-13 11:43:03
(一)The basic principles of (a) positioning installed
1) seeks to unify the reference design, technology and programming calculation.
2) to minimize the number of setups, as far as possible after a positioning fixture, processing all the surface to be processed.
3) Avoid using the accounting machine manually adjust the machining program to fully effective CNC machine tools
2) to minimize the number of setups, as far as possible after a positioning fixture, processing all the surface to be processed.
3) Avoid using the accounting machine manually adjust the machining program to fully effective CNC machine tools
（二）Select the basic principles of the fixture
CNC machining features jig made of two basic requirements: First, to ensure the fixture coordinate direction of the machine coordinate direction relatively fixed; the second is to coordinate the relationship between the parts and the size of the machine coordinate system. In addition, consider the following four points:
1) When the parts processing small quantities, should be using a combination of fixture, jig and other adjustable universal fixture, to shorten production lead time, save production costs.
???? 2) when the mass production considered special fixtures, and seeks simple structure.
???? 3) Part of loading and unloading fast, convenient and reliable to reduce the machine stop time.
4) The components on the fixture should be without prejudice to the machining of parts of the surfaces that clamp to open its positioning, clamping mechanism element can not affect the processing of the pass (such as a collision, etc.).
???? 2) when the mass production considered special fixtures, and seeks simple structure.
???? 3) Part of loading and unloading fast, convenient and reliable to reduce the machine stop time.
4) The components on the fixture should be without prejudice to the machining of parts of the surfaces that clamp to open its positioning, clamping mechanism element can not affect the processing of the pass (such as a collision, etc.).